The seventh form of Autosomal Recessive Limb-Girdle Muscular Dystrophy (LGMD2G; OMIM 601954) is caused by genetic variations in the telethonin gene (also named as TCAP or titin-cap gene) (NM_003673.3). The gene discussed is TTN; the disease is autosomal recessive limb-girdle muscular dystrophy type 2G.